I noticed this as well, I also noticed that there was major lag on the map where you have to burn the biomass right near the beginning of the map, My fps goes from a solid 60 to around 35-50ish it's no big but with my specs I feel that I should be running 60 all the time.

You do realize that memory leaks are that obvious if you start getting mouse lag in the ready room after the game loads...

Does anyone know if it's map specific memory leak, or is it linked to the core of the game?

Like some of the studdering and lag could occur at the last 2 levels for example.

Someone should test these conditions:

1) Hosting and running a single map for 1 hour, not beating it.
2) Restarting and testing each individual map for 1 hour, seeing which one gives off the worst effect.

If all the test shows that all maps will studder after about an hour, it is core game related.

Basically, we need to debug this game, and determine where the source of the memory leak is. It is technically possible for someone to find the source of it, but can't fix it because they lack the source code that the dev has.

Yup this game defiantly has a memory leak somewhere and IMO it's defiantly most noticeable in that First Swarm Egg Mission, after I'm finished with it I have 30 FPS, when normally I have around 100-110.